--- title: "JS Solar JS182MHC120-450 450W Solar Panel - Specs & Review | ComparePV" description: "JS Solar JS182MHC120-450 450W solar panel. Specs: 20.79% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/js-solar-js182mhc120-450" updated: 2026-09-11 --- # JS Solar JS182MHC120-450 Middle of its segment, short guarantee 7,463 panels in the 350-550 W band, all technologies ## Identity - **Manufacturer:** JS Solar - **Model:** JS182MHC120-450 - **Series:** JS182MHC120 - **Rated power:** 450 W - **Cell technology:** Monocrystalline ## How it compares Compared against 350-550 W band, all technologies (7463 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 450 W | 445 W | Typical | | | Module efficiency | 20.79% | 21.48% | Typical | 10,558 | | Power density | 207.9 | 214.3 | Typical | 10,500 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight (kg) | 23.0 kg | 23.5 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 17% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.79% | 21.48% | Typical | 10,558 | | Power density | 207.9 | 214.3 | Typical | 10,500 | | Temperature coefficient | -0.340 | -0.300 | Typical | 8,778 | | Weight per kWp | 51.1 | 52.7 | Typical | 4,436 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 17% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 17% of the 350-550 W band, against a median of 30 yrs. - **Best for:** Residential, commercial, shaded-installations and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 450 W - **Efficiency:** 20.79 % - **Voltage at Pmax (Vmp):** 34.70 V - **Current at Pmax (Imp):** 12.96 A - **Open-circuit voltage (Voc):** 41.40 V - **Short-circuit current (Isc):** 13.68 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 43 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell count:** 120 ### Physical - **Length:** 1909 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 23.0 kg - **Area:** 2.16 m2 - **Power density:** 207.9 Wp/m2 ### Warranty and degradation - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 369 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10558 of 14005 | | Power density | 10500 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 4436 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Gallium-doped cells – near-zero LID** - Gallium doping instead of boron virtually eliminates Light-Induced Degradation: first-year degradation drops to ~0.5% versus ~2–3% typical for standard boron-doped PERC cells. Over a 25-year horizon this translates to an estimated 3–5% higher cumulative energy yield compared to older cell generations without gallium doping. - **Half-cut + Multi-Busbar technology** - Splitting cells in half reduces operating current by 50%, cutting resistive (I²R) losses and limiting the impact of partial shading — a fault in one string does not deactivate the entire module. The Multi-Busbar configuration shortens current paths and improves the fill factor (FF), increasing real-world daily energy harvest. - **Leading efficiency in the monofacial PERC segment** - Peak efficiency of 21.48% at 465 Wp outperforms the peer-comparable Vikram Solar SOMERA (20.91% at the same wattage) by 0.57 pp. For a typical residential installation on a 30 m² roof this difference can translate to roughly 100–150 Wp of additional installed capacity versus less efficient models in the same class. - **25-year linear power warranty** - The manufacturer guarantees a 25-year linear power warranty. At a typical degradation rate of ~0.45%/year after year one, modules are expected to retain over 84% of nominal power in the final warranty year — consistent with the premium standard for monocrystalline 450–465 Wp modules. ## Cons - **Not BNEF Tier 1 bankable** - JS Solar does not appear on BloombergNEF's bankable manufacturer list (Q1 2026), unlike peers such as Jinko Solar or JA Solar. This limits financing eligibility for utility-scale projects (>1 MW) that require Tier 1 bankability from lenders and may reduce asset valuation in secondary-market transactions. - **P-type PERC (2021) vs. TOPCon — efficiency gap** - The series launched in 2021 on P-type PERC cells. Direct peer Luxor Solar ECO LINE TOPCon achieves 23.6% efficiency at the same 465 Wp — a +2.12 pp gap. N-type TOPCon cells also typically deliver a better temperature coefficient for Pmax (~−0.30 to −0.34%/°C vs. ~−0.35 to −0.37%/°C for PERC), yielding higher output on hot summer days. - **Monofacial design — no rear-side albedo gain** - The monofacial module generates no energy from ground-reflected light. Under typical ground-mount or light-colored rooftop conditions, bifacial gain ranges from 5–15%. Peer competitor Luxor ECO LINE Glass-Glass Bifacial at the same 465 Wp nominal rating delivers measurably higher annual energy yield, particularly on installations optimized for bifacial harvest. ## About this series The JS Solar JS182MHC120 solar panel series is a technologically advanced solution based on **Half-Cut monocrystalline cells**, setting new efficiency standards for residential installations and large-scale solar farms. The use of Multi-Busbar technology significantly reduces energy losses resulting from internal resistance, leading to more stable system operation over many years. A key technological differentiator of this series is the **gallium-doping of cells**, which almost entirely eliminates the problem of light-induced degradation (LID), ensuring higher energy yields for investors in the long run. By dividing the module into two independent sections, these panels perform excellently in partial shading conditions, solving the problem of power drops in challenging locations. This is an option for demanding users who prioritize **maximum power density** per unit of roof area. The JS182MHC120 stands out from the competition with its excellent resistance to mechanical loads and **low temperature coefficient**. As a result, these modules maintain high efficiency even on hot days, which, combined with their durability, guarantees a faster return on investment in the variable weather conditions typical of the Polish market. ## Notable figures - Module efficiency of 20.8% is 1.0pp below average for \*\*database\*\* panels (median: 21.8%) - 207.9 W/m² power density is 10.2 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - At -0.34%/°C, loses 0.04pp more power per degree than \*\*database\*\* median (-0.30%/°C) - Weight of 23.0 kg (3.5 kg below \*\*database\*\* median of 26.5 kg) allows easier transport and roof mounting - In the top 75% for efficiency among all N-type panels ## Questions ### What is the maximum power output of the JS Solar JS182MHC120 and what does the 120 half-cut cell technology mean in practice? The JS Solar JS182MHC120 delivers a peak output of 465 Wp, placing it among the top-performing monocrystalline modules for both residential and utility-scale installations. The 120 half-cut cell layout using 182 mm wafers combined with Multi-Busbar (MBB) technology shortens the current path within each cell, reducing resistive losses and improving real-world energy yield compared to standard full-cell modules. ### What power warranty does the JS Solar JS182MHC120 come with and what exactly does it cover? The JS182MHC120 series carries a 25-year linear power output warranty. This guarantees that over a quarter century the module will retain a specified minimum percentage of its rated power, enabling predictable LCOE calculations and protecting the investor against premature performance degradation. Always verify that the warranty is backed by a local distributor, as enforcement depends on the entity providing after-sales support in your region. ### How does the JS Solar JS182MHC120 handle partial shading from a chimney or dormer window? The JS182MHC120 splits its circuit into two independent electrical sections, so shading on one part of the module does not shut down the entire panel. Shaded cells are bypassed while the rest of the module continues producing power. This is a significant advantage over conventional full-cell modules and makes the JS182MHC120 well suited for sloped roofs affected by chimneys, antennas, or neighboring structures casting morning or evening shadows. ### What is gallium doping in the JS182MHC120 cells and why does it prevent LID? Conventional boron-doped monocrystalline cells can lose several percent of rated power within the first hours of light exposure — a phenomenon called Light Induced Degradation (LID). The JS182MHC120 uses gallium doping instead of boron, which virtually eliminates LID. In practical terms, the module reaches stable output close to its nameplate rating from day one and maintains that level throughout its 25-year lifespan, delivering a higher cumulative energy yield. ### Is JS Solar a Tier 1 manufacturer and is it financially safe to invest in the JS182MHC120? JS Solar (Yixing JS Solar Co., Ltd.) is not classified as a Tier 1 manufacturer by Bloomberg NEF, meaning it has lower bankability recognition compared to market leaders. The company is listed in the ENF Solar database and supplies modules internationally. Before purchasing, confirm that the panels carry IEC 61215 and IEC 61730 certification and that warranty obligations are covered by an authorized distributor in your country. ### Is the JS Solar JS182MHC120 a monofacial panel and is it a better choice than a bifacial version? Yes, the JS182MHC120 is a monofacial module — it captures energy only through the front surface, without a bifacial glass back sheet. Compared to bifacial panels it is lighter and more cost-effective. Bifacial gain is only meaningful over highly reflective surfaces such as gravel, concrete, or snow at an appropriate tilt angle. For a typical dark-colored sloped roof installation, the monofacial JS182MHC120 at 465 Wp is a fully adequate and more economical choice. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/JS182MHC120-465W-a9e1b038c637.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, +4.0 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, +3.7 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +50 W, cooler, +3.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +50 W, cooler, +3.7 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +50 W, cooler, +3.7 pp | | [GCL GCL-NR10R/54BGDF](https://comparepv.com/panel/gcl-gcl-nr10r-54bgdf) | 500 W | +50 W, cooler, +3.7 pp | | [JS Solar JS182MHC120-455](https://comparepv.com/panel/js-solar-js182mhc120-455) | 455 W | +0.2 pp | | [JS Solar JS182MHC120-460](https://comparepv.com/panel/js-solar-js182mhc120-460) | 460 W | +10 W, +0.5 pp | | [JS Solar JS182MHC120-465](https://comparepv.com/panel/js-solar-js182mhc120-465) | 465 W | +15 W, +0.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +110 W, cooler, +4.0 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +105 W, cooler, +3.8 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +100 W, cooler, +3.6 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +90 W, cooler, +3.6 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +90 W, cooler, +3.6 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +95 W, cooler, +3.5 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +95 W, cooler, +3.4 pp | --- Source: https://comparepv.com/panel/js-solar-js182mhc120-450 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.